If `sec theta+tan theta=4`, the value of `cos theta` is: (A) 1 (B) `1/2` (C) `7/17` (D) `8/18`

If tan theta + sec theta =4 , the value of sin theta cos theta .

If 1+4 tan theta = 4 sec theta then cos theta=

If sin theta = ( 8)/(17), then the value of cos theta and tan theta is (a) (15)/(17), (8)/(15) (b) (15)/(8) , (8)/(15) (c) (15)/(17), (15)/(8) (d) None of these

(csc theta - sin theta)(sec theta - cos theta)(tan theta+ cot theta)= A)1 B)0 C) -1 D) 2

a sec theta+b tan theta=1,a sec theta-b tan theta=5 then a^(2)(b^(2)+4)

If 8 theta = pi, then cos 7 theta + cos theta is equal to ............ A) 0 B) 1 C) -1 D) 7

tan2 theta(sec8 theta-1)=tan8 theta(sec4 theta-1)

sin 2 theta * (tan theta + cot theta)= A) sec theta B) csc theta C)1D)2

The value of (1+cot theta-cos ec theta)(1+tan theta+sec theta) is (a) 1( b) 2(c)4(d)0